Question : Report fields that shoud be blank showing results

This is a cut out of one of my reports.  All of the white boxes are "lookup" fields with no value(null).  When I run the report these phantom value shows up.  They are the lowest ID in the table the field refers to.   In the column titled "Model", I attempted to solve this problem by leaving the lowest ID blank.  It is a cheap fix and will not work for every case.  

Any suggestions on how to handle this type of issue?

accessreportissue.jpg (81 KB) (File Type Details) 

sample report showing phantom values

Answer : Report fields that shoud be blank showing results

<The article listed all the evils of lookup tables, but did not suggest alternatives for the benefits that the lookup table provides.>
... Yes, this is a source of confusion.
;-)
Lookup Fields should only be on your *Forms* not in the tables.
The exact same Lookup wizard is available in design view of a Form.
;-)

The error you are getting  is a result of you having two left Joins on a table.
If you changed the joins to an Inner joins, (Fields on both tables are the same) it should work.